多层机织物接触界面的空气层热阻  

Air Layer Thermal Resistance at the Interface of Multilayer Woven Fabric

作　　者：沈华[1] 刘美娜[2] 屠乐希 严小飞 刘美霞 SHEN Hua;LIU Meina;TU Lexi;YAN Xiaofei;LIU Meixia(College of Textiles, Donghua University, Shanghai 201620, China;College of Engineering, Yantai Nanshan University, Yantai 265706, China;Department of Biobased Materials Science, Kyoto Institute of Technology, Kyoto 606-8585, Japan)

机构地区：[1]东华大学纺织学院,上海201620 [2]烟台南山学院工学院,山东烟台265706 [3]京都工艺纤维大学生物材料科学系,日本京都6068585

出　　处：《东华大学学报（自然科学版）》2019年第4期507-512,共6页Journal of Donghua University(Natural Science)

基　　金：国家自然科学基金资助项目(51673036);山东省高等学校科技计划资助项目(J17KB009)

摘　　要：为了研究多层机织物组合叠加时,机织物界面之间的空气层对其保温性能的影响,借助有限元软件建立了各向异性机织物模型,并计算了机织物不受界面接触空气层影响时的热阻。将模型得到的织物热阻与Thermolab Ⅱ Tester KES-F7型保温仪测试得到的热阻进行比较,确定了机织物界面之间空气层热阻。研究结果表明:多层机织物接触界面的空气层热阻随着其表面粗糙度的增加而显著增加,并且两者呈线性关系,相关系数为0.90;空气层热阻占机织物自身热阻的比率为43.3%~104.2%。因此由粗糙度引起的机织物界面的空气层热阻对提高机织物的保温性能具有至关重要的作用。For investigating the influence of air layer on the insulation property of multilayer textiles,the finite element method(FEM)and Thermolab Ⅱ Tester KES-F7 were employed.A three-dimensional FEM model was developed to calculate the thermal resistance of fabric and in this model the air layer enclosed on the fabric surface was ignored.Then the air layer resistance was determined by comparing the simulation and experiment result from the Thermolab Ⅱ Tester KES-F7.The results suggest that surface roughness of fabrics is strongly related to the air layer resistance.A linear relationship was observed between the two values and the correlation coefficient was higher than 0.90.In addition,the ratio of air resistance to fabrics resistance is from43.3%-104.2%,which indicates that the air layer at the interface is essential for enhancing the insulation property of multilayer textiles.

关 键 词：热阻 多层机织物 表面粗糙度 各向异性模型 

分 类 号：TS101.9[轻工技术与工程—纺织工程]